<style type="text/css">
    #content {
        width: 320px;
        position: absolute;
        top: 0;
        bottom: 0;
        left: 0;
        right: 0;
        margin: auto;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
    }

    label,
    input,
    select {
        vertical-align: middle;
    }

    .mui-switch {
        width: 52px;
        height: 31px;
        position: relative;
        border: 1px solid #dfdfdf;
        background-color: #fdfdfd;
        box-shadow: #dfdfdf 0 0 0 0 inset;
        border-radius: 20px;
        border-top-left-radius: 20px;
        border-top-right-radius: 20px;
        border-bottom-left-radius: 20px;
        border-bottom-right-radius: 20px;
        background-clip: content-box;
        display: inline-block;
        -webkit-appearance: none;
        user-select: none;
        outline: none;
    }

    .mui-switch:before {
        content: '';
        width: 29px;
        height: 29px;
        position: absolute;
        top: 0px;
        left: 0;
        border-radius: 20px;
        border-top-left-radius: 20px;
        border-top-right-radius: 20px;
        border-bottom-left-radius: 20px;
        border-bottom-right-radius: 20px;
        background-color: #fff;
        box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
    }

    .mui-switch:checked {
        border-color: #64bd63;
        box-shadow: #64bd63 0 0 0 16px inset;
        background-color: #64bd63;
    }

    .mui-switch:checked:before {
        left: 21px;
    }

    .mui-switch.mui-switch-animbg {
        transition: background-color ease 0.4s;
    }

    .mui-switch.mui-switch-animbg:before {
        transition: left 0.3s;
    }

    .mui-switch.mui-switch-animbg:checked {
        box-shadow: #dfdfdf 0 0 0 0 inset;
        background-color: #64bd63;
        transition: border-color 0.4s, background-color ease 0.4s;
    }

    .mui-switch.mui-switch-animbg:checked:before {
        transition: left 0.3s;
    }

    .mui-switch.mui-switch-anim {
        transition: border cubic-bezier(0, 0, 0, 1) 0.4s, box-shadow cubic-bezier(0, 0, 0, 1) 0.4s;
    }

    .mui-switch.mui-switch-anim:before {
        transition: left 0.3s;
    }

    .mui-switch.mui-switch-anim:checked {
        box-shadow: #64bd63 0 0 0 16px inset;
        background-color: #64bd63;
        transition: border ease 0.4s, box-shadow ease 0.4s, background-color ease 1.2s;
    }

    .mui-switch.mui-switch-anim:checked:before {
        transition: left 0.3s;
    }
</style>
<div id="content">
    <label><input class="mui-switch" type="checkbox"> 无动画　　　</label>
    <label><input class="mui-switch mui-switch-animbg" type="checkbox" checked> 背景过渡效果</label>
    <label><input class="mui-switch mui-switch-anim" type="checkbox" checked> 扩散过渡效果</label>
</div>